Message ID | 20200610201345.13273-41-willy@infradead.org (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <SRS0=G8WG=7X=kvack.org=owner-linux-mm@kernel.org> Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DE7C590 for <patchwork-linux-mm@patchwork.kernel.org>; Wed, 10 Jun 2020 20:39:49 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id AAC40206A4 for <patchwork-linux-mm@patchwork.kernel.org>; Wed, 10 Jun 2020 20:39:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="S8TmZlwJ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AAC40206A4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id EBFB68D002F; Wed, 10 Jun 2020 16:39:31 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id DD5058D002D; Wed, 10 Jun 2020 16:39:31 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 8F1EA8D002F; Wed, 10 Jun 2020 16:39:31 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0001.hostedemail.com [216.40.44.1]) by kanga.kvack.org (Postfix) with ESMTP id 735588D002D for <linux-mm@kvack.org>; Wed, 10 Jun 2020 16:39:31 -0400 (EDT) Received: from smtpin25.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 363FB8017CA1 for <linux-mm@kvack.org>; Wed, 10 Jun 2020 20:39:31 +0000 (UTC) X-FDA: 76914467742.25.paste17_2e0990926dce Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin25.hostedemail.com (Postfix) with ESMTP id 035141804E3E1 for <linux-mm@kvack.org>; Wed, 10 Jun 2020 20:39:30 +0000 (UTC) X-Spam-Summary: 2,0,0,a0be1b81fdb3cda8,d41d8cd98f00b204,willy@infradead.org,,RULES_HIT:41:355:379:541:800:960:968:973:988:989:1260:1311:1314:1345:1359:1437:1515:1534:1540:1711:1730:1747:1777:1792:2393:2559:2562:2895:3138:3139:3140:3141:3142:3352:3865:3867:4321:5007:6119:6261:6653:7576:8957:10004:11026:11658:11914:12043:12296:12297:12438:12555:12895:13069:13311:13357:13894:14096:14181:14384:14394:14721:21080:21451:21627:30054,0,RBL:198.137.202.133:@infradead.org:.lbl8.mailshell.net-62.8.0.100 64.201.201.201,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:neutral,Custom_rules:0:0:0,LFtime:1,LUA_SUMMARY:none X-HE-Tag: paste17_2e0990926dce X-Filterd-Recvd-Size: 2443 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf48.hostedemail.com (Postfix) with ESMTP for <linux-mm@kvack.org>; Wed, 10 Jun 2020 20:39:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=g1BN8ZEjBZSGzNik3H7y+eWzpa3p549rVRPP5tfDWW4=; b=S8TmZlwJGr4i53ZlyGiAARSx3B o/PTdqvC3Swsl/OTVTcOgVe3eSV6K/0lN7UW/J5JPqo+tAU8viOyJPIKIOu1hsqEeVXLnXrnUi2Vs YLJKG7xytHER10sJZqEc+TF9ikz4FxfiSvF3JS43qvLHLPlZ3caBAP88T39Gt9/lotHFCNCRWbwRZ yP+Q39vBRcNTIIwZfQUSvkyouf7jnoCZ/u2TFOE5fymJM/9gqbluTgEgio3WiJrQI6OqXs/LuecAX 0oxXAbq9/a4ROH7pvpiQXLA3D209RsVrkiXL78R/X4E7CwcOcy1t67dxdH3a88p/G+B9aWnTMXHsf cCP91qEA==; Received: from willy by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jj76a-0003XI-TB; Wed, 10 Jun 2020 20:13:48 +0000 From: Matthew Wilcox <willy@infradead.org> To: linux-fsdevel@vger.kernel.org Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH v6 40/51] mm: Avoid splitting THPs Date: Wed, 10 Jun 2020 13:13:34 -0700 Message-Id: <20200610201345.13273-41-willy@infradead.org> X-Mailer: git-send-email 2.21.1 In-Reply-To: <20200610201345.13273-1-willy@infradead.org> References: <20200610201345.13273-1-willy@infradead.org> MIME-Version: 1.0 X-Rspamd-Queue-Id: 035141804E3E1 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam02 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: <linux-mm.kvack.org> |
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Large pages in the page cache
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expand
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diff --git a/mm/vmscan.c b/mm/vmscan.c index 17934e03b3aa..0db62c1001f7 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1277,9 +1277,9 @@ static unsigned int shrink_page_list(struct list_head *page_list, /* Adding to swap updated mapping */ mapping = page_mapping(page); } - } else if (unlikely(PageTransHuge(page))) { - /* Split file THP */ - if (split_huge_page_to_list(page, page_list)) + } else if (PageTransHuge(page)) { + if ((!mapping || !mapping_thp_support(mapping)) && + split_huge_page_to_list(page, page_list)) goto keep_locked; }
From: "Matthew Wilcox (Oracle)" <willy@infradead.org> If the filesystem supports THPs, then do not split them before removing them from the page cache; remove them as a unit. --- mm/vmscan.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)